12:43 Hands on SQL UNION/UNION ALL/IS NULL/IS NOT NULL/ISNULL()/COALESCE() functions with Complete queries 1:40 How to Use UNION ALL to Avoid Null Values for Column Count Mismatch in PostgreSQL 9:50 Difference between Union and Union All in Detail(With Null Values ,Duplicate Values ,Diff DataType) 8:25 SQL Server Tutorial 31: Using TOP, DISTINCT, NULL and UNION 4:34 Warning in SQL | Null value is eliminated by an aggregate or other SET operation 2:37 SQL for Beginners 104 Concatenation on NULL values 3:56 SQL Server String Concatenation with NULL Values | '+', CONCAT(), CONCAT_WS() 7:23 Three Ways to Concatenate and how to protect from NULL. | Essential SQL 1:50 Extracting Non-null Data from MySQL Database: A Simple Guide to Your Query 10:32 SQL SET Operators | UNION, UNION ALL, INTERSECT, EXCEPT, MINUS | SQL SET Operations With NULL - P2 1:47 CONCAT and NULL - SQL in Sixty Seconds 123 1:23 SQL : SQL Server 2008 - Group by null and not null values without union 3:15 What is SQL? Data Definition Commands | Set operations | Aggregate functions | Null values 2:38 How to Use UNION to Handle Many-to-Many Joins in SQL with Nullable Tables 1:31 How to Concatenate Strings While Ignoring NULLs in BigQuery 1:38 How to Exclude Null Entries in SQL Server Concatenation 1:38 Handling NULL Values: A Concise Solution for Concatenating Strings in SQL 1:37 Dealing with NULL values and EMPTY strings in UNION of two tables